So instead of a chain lasting 5000km, it will last 5500km? Considering I ride Campy chains (and the wear is actually much longer) is the cost of the link needed to flip the chain justified by the 10% extra use I get from the chain. Also note that this 10% extra use is at the end of the useful life of this chain so the performance will have been significantly degraded.

Basically, for the price of a link I can get another 1000km of less than perfect shifting performance.

Perhaps with a Shimano pin costing less, the extra km might be cost effective.

Chains with Master Links might benefit the most.

If the theory holds up in the real world, flipping your chain basically extends the life of a chian buy 10% at the end of it's useful life. So every 10th chain is free but you have to endure crappy shifting to get it.

I think I'll have one less beer this weekend and go with the new chain. Thanks.